After that the efficiency falls away and by around 30 metres they become almost completely ineffective for removing dissolved gasses from both LPHW and CHW Systems. All is relative in accordance with Henry's Law. This is where the use of Vacuum Degassers come in. Please consult us with regards to Vacuum Degassers or refill Degassers for use in conjunction with our Dirt Separators only. The VD units normally contain single phase Grundfos Pumps manufactured in the EU.
Please do not waste your clients money installing VDU's on very low static head. We have seen cases of this.